package com.myproject.music.service;
import com.myproject.music.domain.User;
import java.util.List;
public interface UserService {
    public List<User> selectUserAll();
    public User selectUserById(Long id);
    public List<User> selectUserByParam(String userName);
    public int insertUser(User user);
    public int updateUser(User user);
    public int deleteUserById(Long id);
}